writing to excel by VB code when the same file window is open

Hi,

I am trying to log the data into a excel file continuisly which will be received from the com port.

I want to do this in a in interval of time.

Also, if i keep the file widow open I should be able to log the data from the VB code. Is there any way to do this.

In other words, user should be able to view the data at the same time when data being logged.

Appreciate ur help!!